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2 years ago

(8 - 20 divided by 2) Explain.

Mathematics

1 answer:

Norma-Jean [14]2 years ago

3 0

8-20/2
8-(20/2)
8-(10)
-2

Answer: -2

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Identify 1 and 2. Select all that apply of the following terms: acute, right, obtuse, adjacent, vertical, complementary, supplem

Fittoniya [83]

∠1 and ∠2 are RIGHT ANGLES, VERTICAL ANGLES, and SUPPLEMENTARY ANGLES.

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3 years ago

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Solve for X.........

Morgarella [4.7K]

Answer:

Hey there!

There is this equation, which states that the angle created by an inscribed angle is half the measure of the arc.

Thus, we can write: 60=5x-5

65=5x

x=13

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3 years ago

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77. the volume of a cube is increasing at a rate of <img src="https://tex.z-dn.net/?f=10%20%5Cmathrm%7B~cm%7D%5E%7B3%7D%20%2F%20

Colt1911 [192]

Answer:

$\displaystyle \frac{4}{3}\text{cm}^2/\text{min}$

Step-by-step explanation:

<u>Given</u>

<u /> $\displaystyle \frac{dV}{dt}=10\:\text{cm}^3/\text{min}\\ \\V=s^3\\\\SA=6s^2\\\\\frac{d(SA)}{dt}=?}\:;s=30\text{cm}$

<u>Solution</u>

(1) Find the rate of the cube's edge length with respect to time at s=30:

$\displaystyle V=s^3\\\\\frac{dV}{dt}=3s^2\frac{ds}{dt}\\ \\10=3(30)^2\frac{ds}{dt}\\ \\10=3(900)\frac{ds}{dt}\\\\10=2700\frac{ds}{dt}\\\\\frac{10}{2700}=\frac{ds}{dt}\\\\\frac{ds}{dt}=\frac{1}{270}\text{cm}/\text{min}$

(2) Find the rate of the cube's surface area with respect to time at s=30:

$\displaystyle SA=6s^2\\\\\frac{d(SA)}{dt}=12s\frac{ds}{dt}\\ \\\frac{d(SA)}{dt}=12(30)\biggr(\frac{1}{270}\biggr)\\\\\frac{d(SA)}{dt}=\frac{360}{270}\biggr\\\\\frac{d(SA)}{dt}=\frac{4}{3}\text{cm}^2/\text{min}$

Therefore, the surface area increases when the length of an edge is 30 cm at a rate of $\displaystyle \frac{4}{3}\text{cm}^2/\text{min}$ .

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1 year ago

Find the value of the expression:<br> x+5-6 when x=5<br><br> Step by step please

Butoxors [25]

Answer:

Step-by-step explanation:

Since x = 5, you can substitute 5 into the x value of the expression: 5 + 5 - 6. Then, you add the 5 + 5 to get 10 in which you subtract 6 from. The answer is 4.

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2 years ago

Elizabeth bought a cheese pizza. It was served on a metal tray with a diameter of 22 centimeters. What is the tray's area?

agasfer [191]

<h3>Answer:</h3>

The Area of the tray ≈380 cm

<h3>Solution:</h3>

We are given the diameter of the tray, which is equivalent to 22 cm.
We are asked to find the area of the tray.
Remember the formula:
Area of a circle = πr²
Where
π -> pi (3.14...)
r -> radius
Notice that we aren't given the radius. We're given the diameter only.
No reason to panic. We can easily find the radius by dividing the diameter by 2.
The radius is equal to 11 cm.
Now, plug the values into the formula:
A=π(11)²
A=121π
A≈380 cm

Hope it helps.

Do comment if you have any query.

4 0

1 year ago